221222010040 has 16 divisors (see below), whose sum is σ = 497749522680. Its totient is φ = 88488804000.

The previous prime is 221222009909. The next prime is 221222010059. The reversal of 221222010040 is 40010222122.

It is a super-2 number, since 2×221222010040² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221222009996 and 221222010023.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2765275086 + ... + 2765275165.

Almost surely, 2^221222010040 is an apocalyptic number.

221222010040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221222010040 is an abundant number, since it is smaller than the sum of its proper divisors (276527512640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221222010040 is a wasteful number, since it uses less digits than its factorization.

221222010040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5530550262 (or 5530550258 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 221222010040 its reverse (40010222122), we get a palindrome (261232232162).

The spelling of 221222010040 in words is "two hundred twenty-one billion, two hundred twenty-two million, ten thousand, forty".